pre-noun adjectival
considerable; great; important; a big deal
Used before nouns to express that something is remarkable, significant, or not trivial. Often appears in negative or rhetorical contexts (e.g., 大したことない).
He succeeded without making much effort.
大した怪我じゃなくてよかった。
I'm glad it wasn't a serious injury.
あの映画は大したことなかった。
That movie was no big deal.
It's not a serious injury, so please don't worry.
Becoming president at that age—he's quite an impressive person.
With rain this light, it probably won't turn into anything serious.